8PCS CAT40 ER16 2.76 Collet Chuck Tool Holder Balanced G2.5 20000 RPM SET

  
CAT40 ER16 chucks are widely used in industry fields with gage/processing length of 2.76 (70 mm). Each of them is hardened and grounded to ensure its accuracy, which ranges from 0.00012" to 0.0002" (0.003-0.005 mm).